github.com/alibaba/sealer@v0.8.6-0.20220430115802-37a2bdaa8173/utils/collector/utils.go (about)

     1  // Copyright © 2021 Alibaba Group Holding Ltd.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package collector
    16  
    17  import (
    18  	"regexp"
    19  	"strings"
    20  )
    21  
    22  var (
    23  	validPrefixes = map[string][]string{
    24  		"url": {"http://", "https://"},
    25  		"git": {"git://", "git@"},
    26  	}
    27  	urlPathWithFragmentSuffix = regexp.MustCompile(".git(?:#.+)?$")
    28  )
    29  
    30  // IsURL returns true if the provided str is an HTTP(S) URL.
    31  func IsURL(str string) bool {
    32  	return checkURL(str, "url")
    33  }
    34  
    35  // IsGitURL returns true if the provided str is a git repository URL.
    36  func IsGitURL(str string) bool {
    37  	if IsURL(str) && urlPathWithFragmentSuffix.MatchString(str) {
    38  		return true
    39  	}
    40  	return checkURL(str, "git")
    41  }
    42  
    43  func checkURL(str, kind string) bool {
    44  	for _, prefix := range validPrefixes[kind] {
    45  		if strings.HasPrefix(str, prefix) {
    46  			return true
    47  		}
    48  	}
    49  	return false
    50  }